Question 95027
Sam must have an average of 70 or more in his summer course to
obtain a grade of C. His first three test grades were 75, 63, and 68. Write an inequality
{{{(75+63+68+x)/4)}}}=70
{{{(206+x)/4)}}}=70
{{{(206+x)}}}=(70)(4)
206+x=280
x=280-206
x=74
.
Checking:
{{{(206+74)/4)}}}=70
{{{(280/4)}}}=70
70=70 [checks out]