{20, 30, 40, 50, 60, 70, 80} the mean of this set of numbers is a) 20 b) 50 c) 55 d) 60

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°

Cesar bought 7 items at the candy store. he bought candy bars for $0.50 each and packs of gum for $0.95 each. he spent a total of $6.80. what system represents the solution for the number of candy bars (x) and the number of pack gum (y) purchased?