MATH A-100 Instructor: Craig Sumerix ________________________ In-class Review over Chapters 1 & 2 Show your work/set up below or on a separate piece of paper . Write your answer on the line provided to the right. 1) Round 187,499 to the nearest thousand 1) _________ th 2) Change 20 to a decimal and round it to the 1000 place 28 2) _________ Simplify: 3) 14 3) _________ 0 4) - 72 4) _________ 5) |-9| 5) _________ 6) 6) _________ 4/5 8/15 2 7) 8 – 3[4 – (7 – 9) + 10] 7) _________ Solve the following equations. 8) 4x = 10 8) _________ 9) 2x -5 = 17 9) _________ 10) 0.25y - 3 = 5 10) _________ 11) -4(x - 2) = 5(x - 11) 11) _________ 12) x – 3 = 9 2 8 12) _________ 13) Given that F = 1.8C + 32, convert 37 degrees C to F 13) _________ 14) In a right triangle with hypotenuse as c, the legs being a and b, find the 14) _________ length of missing side if a = 16 and b = 12. 15) Find the perimeter and area of a rectangle whose dimension are 13 in x 6 in. 15) P =_________ A = _________ 16) Find the circumference and area of the following circle. 16) C = ________ A = _________ r = 5 cm 17) Find the area for the following figure. 17) __________ 8 in. 25 in 10 in 18) I = Prt ; solve for P 18) _________ 19) A = 2L + 2W ; solve for W 19) _________ 20) Eight subtracted from a number is equal to half the number. 20) _________ What is the number? 21) The product of 6 and a number decreased by 10 is four more than twice the sum of the number and 3 . Find the number. 21) _________ 22) Solve and Graph the following inequality. Also write your answer in interval notation. 22) Int Not:________ 3x – 8 > -2 23) What is 40% of 90? 23) _________ 24) 75 is what percent of 300? 24) _________ 25) If you earn a 4% commission on sales, how much must you sell to earn $800?25) _________ 26) Find two supplementary angles if one angle is 30 degrees larger than the other 26) one. _________ 27) State sales tax is 7%. You want to buy a new TV. Its original price is $600, but27) is _________ now on sale for 20% off. What is the total you pay for the TV (including sales tax)? Answers: 1) 187,000 2) .714 3) undefined 4) - 49 5) 9 6) 3/2 7) -22 8) x = 2.5 or 5/2 9) x = 11 10) y = 32 11) x = 7 12) x = 21 8 13) 98.6 F 14) c = 20 2 15) P =38 in; A = 78 in 2 16) C = 31.4 cm; A = 78.5 cm 17) 210 in2 18) P = I/rt 19) W = (A - 2L)/2 or W= A/2 - L 20) 16 21) 5 22) (--------------------------------------- 2 Interval Notation = (2, infinity) 23) 36 24) 75 is what percent of 300? 25) $20,000 26) 75 and 105 27) $513.60