Why people made up ratios?

What are the x-intercepts of the graph of the function below? y = x^2+3x - 28 A. (7,0) and (4,0) B. (-7,0) and (-4,0) C. (7,0) and (-4,0) D. (-7,0) and (4,0)

A bag contains 14 golf balls and 16 tennis balls. What is the ratio, written in lowest terms, of golf balls to the total number of balls in the bag? A. 7 to 8 B. 7 to 15 C. 8 to 15 D. 7 to 16

12 divided by 1 half

Travis just got a new credit card that offers an introductory APR of 3.6% for the first 3 months and a standard APR of 14.4% thereafter. If interest is compounded monthly, what is the periodic interest rate during the first 3 months?. A. 1.6%. B. 1.

Suppose you invest in an account that pays 5% interest, compounded monthly. You would take your investment to grow to 10,000 in 14 years. How much would you have to invest as a lump sum order for this to happen

A number decreased by 30% and the result was 7560. What was the original number? A. 2268 B. 9828 C. 5292 D. 10800

3 over 8 times 8 over 9

Find the unit rate for number of parts manufactured per hour if 1363 parts are made in 5 hours. Round to the nearest integer.

Zoe needs to buy beads to make jewelry. For each earning, Zoe uses 3 small blue beads, 1 metallic bead, and 2 large green beads.

In matg, what are coefficients?