Combine like terms: 7x-8y+5x^2+2x-10y

the answer is 5x^2+9x-18y

Step-by-step explanation:

since 5x^2 does not have like terms, it is left alone. next, combine all of the x variables which are 7x and 2x to get 9x. that leaves you with the y values which are -8y and -10y to get -18y. when combining terms, always look for similar variables. remember, just because some value has the same variable doesn't mean it is necessarily the same. for example, you cannot combine x^2 and x because one has a power and the other does not. i hoped this helped.

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).

answer: it's d

step-by-step explanation: