A map's scale is 1 inch equals 50 miles. If New York City is 4 inches away from Chelsea, MA, about how many miles is it from Chelsea to New York City?

A. 50 miles

B. 100 miles

C. 150 miles

D. 200 miles

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?