Which equation is equivalent to y = -5 (x – 3)2 +9? y= -5x2 + 30x + 15
y = -5x2 + 30x – 54
y= -5x2 – 30x - 36
y = -5x2 + 30x - 36

tangent

step-by-step explanation:

300pi

step-by-step explanation:

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.