Set up the percent proportion for the application problem. Do not try to solve for any unknowns.A chemical is 78% pure. In 760 grams of the chemical, how much is pure?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: A
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Find the quotient.
÷ 4
A. 
B. 
C. 
D. 
Solve.The amount of simple interest earned on an investment over a fixed amount of time is jointly proportional to the principle invested and the interest rate. A principle investment of $2400.00 with an interest rate of 5% earned $360.00 in simple interest. Find the amount of simple interest earned if the principle is $4000.00 and the interest rate is 3%.
A. $216.00 B. $600.00 C. $360.00 D. $36,000.00
Determine where the function is increasing and where it is decreasing.f(x) = x2 - 10x + 25
A. increasing on (-5, ?) decreasing on (-?, -5) B. increasing on (5, ?) decreasing on (-?, 5) C. increasing on (-?, 5) decreasing on (5, ?) D. increasing on (-?, -5) decreasing on (-5, ?)
Determine whether the variation between the indicated quantities is direct or inverse.The cost of buying rice and the weight of the rice purchased.
A. Direct B. Inverse