Answer:
14
Step-by-step explanation:
4y-10 + y = 20
5y - 10 = 20
5y = 30
y = 6
and then
x = 14
I have no idea lol. just want free points
assuming b is the underscript of log, the formula is log _b_3=-8.
the formula for log is usually log_b_x=n, and to convert it to exponential would be the same as b^n=x
just fill in the numbers, b is still b, and -8 will be the in place of n, equal to 3.
b^-8=3
Your answer is 615 - 342 = 273