Solve the given system by substitution.
(r=4s
r=1/2s + 7

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

What is the value of x? enter your answer in the box.