Which expression is equivalent to "4 times the sum of a number and 8"?

Tiara buys the pizza shown below: a circular pizza is shown. the edge of one slice is marked ab. what does the curve ab represent?

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.