A fire truck responds to a fire in North Miami. The truck drives 3 miles from the fire station to the fire and plans to pump water onto the fire at a rate of 500 gallons per minute (gpm). If the firefighters need the ladder to reach 20' up the side of the building and the base of the ladder will be 7' from the side of the building, how long does
the ladder need to be?
A) 21.21
B) 18.7
©) 20
D) 23
E)Not enough information.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!