50 points to the person that can answer this correctly: The expression 4x + 5 can be used to find the cost of ordering 4 tickets online to a play at a local theater.

What is the coefficient in the expression?
A. 4x + 5
B. 4
C. x + 5
D. 5

The answer is B. (4) Because a coeffecient is the number next to the letter.

Its 4

Step-by-step explanation:

A coefficient is the quantity placed before the multiplier aka in this case "x"

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.