Use 1% or 10% to estimate 8% of 310.

To estimate the 8% of 310, we use 10% method since 8 when rounded off is equals to 10.

The 10% of a number can simply be obtained by moving the decimal place one point to the left.

Therefore using the 10% method, the 8% of 310 is approximately 31.0

10% = 31.0

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: