Lucy has $25 in her piggy bank. She plans to add $5 per week until she has a total of $75. (Let your variable be x).

25 + 5x = 75

x = the number of weeks it takes to reach $75

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2

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!