Didier whants to buy a bike that cost $125 he aredy has saved $65 he earns $12 each hour working a a life garud abd saves all of it for the bike how many hours dose dider need to work in order to have money to buy the bike

5 Hours of work.

Step-by-step explanation:

Subtract 125 by 65 and we get 60. Then divide that 60 by how much he gets paid an hour ($12), and you get 5 hours of work until he can buy the bike.

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94

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!