Translate the percent problem to a proportion using x for the unknown value. Do not solve the proportion.25% of 99 is what?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: D
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Find the modulus of the number.9i
A. -9 B. 9i C. 9 D. 81
A car leaves an intersection traveling west. Its position 4 sec later is 26 ft from the intersection. At the same time, another car leaves the same intersection heading north so that its position 4 sec later is 26 ft from the intersection. If the speeds of the cars at that instant of time are 12 ft/sec and 10 ft/sec, respectively, find the rate at which the distance between the two cars is changing. Round to the nearest tenth if necessary.
What will be an ideal response?
Solve the equation. Simplify. If the solution is an improper fraction, write it as a mixed number.24 = 8
? n
A. n = 3
B. n = 2
C. n = 2
D. n = 208
Factor.18m4n - 21m2n + 12mn
A. 3mn(6m3 - 7m + 4) B. (3mn - 7m)(6m3 + 4) C. 6m3 - 7m + 4 D. 3m(6m3 - 7m + 4n)