This question: 1 pt
lath
solve using the substitution method.
x + y = 8
y = 3-x
(2)
what is the solution of the system? select the correct

Precalculus question, image attached.

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

An ant travels at a constant rate of 30cm every 2 minutes. at what speed does the ant travel per minute