Chapter 8 linear appliCaTionS 309- A pair of boots is on sale for $112, which is 30% off the original price. What is the
original price?
a. $160.00
b. $145.60
C. $373.30
D. $142.00 - When the radius of a circle is increased by 3 inches, its area is increased by
75 ππ in^2. What is the radius of the original circle?
a. 10 inches
b. 11 inches
C. 12 inches
D. 14 inches - Crystal is 3 years older than Melissa but 2 years younger than Carolina. The sum
of their ages is 62. How old is Crystal?
a. 21 years
b. 22 years
C. 23 years
D. 24 years - Nichelle can wash the windows of a small store in 5 hours 15 minutes. Maxwell
can wash the windows of the same store in 2 hours 6 minutes. If they work
together, how long would it take for them to wash the store’s windows?
a. 60 minutes
b. 80 minutes
C. 90 minutes
D. 110 minutes - Troy has $1.55 in coins in his pocket. He has twice as many nickels as dimes and
one more dime than he has quarters. How many quarters does he have in his
pocket?
a. 2
b. 3
C. 4
D. 5 - Ryan’s course grade is based on three tests, the homework average, and the final
exam. Each test is worth 20%, the homework average is worth 15%, and the final
exam is worth 25%. His homework average is 84, and his test grades are 68, 79,
and 75. He must make at least a B (80) in order to keep his scholarship. What is
the lowest score he can make on the final exam and keep his scholarship?
a. 92
b. 93
C. 94
D. 95