Answer: 243
Step-by-step explanation:
We have the expression

Note that the expression depends on 3 variables
a, b and c
in this case we want to evaluate the expression for

Then change the variable a by the number 2, the variable b by the number 3 and the variable c by the number 4
So we have

Now simplify the expression


The answer is 243
I think it would be 25. Because 1/4 equals .25 as a decimal and 3/4 equals .75 as a decimal.
Christopher needs to create so that his time spent will be the same as his current time, the equation could be: 2.4x = 1.2x + 15
Assuming that means 1.10^t:
0.10 is for years. To get months divide by 12.
0.10/12 = 0.0083333...
And (1+0.083333...) = 1.0833333. (You will have to multiply t by 12 also to get it in terms of months)
(1.0833333)^12t