An engineer invested $10,000 in a six-month savings certificate that paid a simple annual interest rate of 12%. After six months she invested the total value of her investment in another six-month certificate. After six more months, the investment was worth $11.130. If the annual interest rate of the second certificate is r% then what is r? thank you!

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

answer: an 8-foot rope is tied from the top of a pole to a

stake in the ground, as shown in the diagram

below

step-by-step explanation:

step-by-step explanation: