15. a cell phone company charges $45 per
month for unlimited calls and $0.25 per
text message. another cell phone
company charges $0.15 per text
message and $70 per month for unlimited
calls.
b. solve the equation and interpret the
solution.

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin. how many doctors use brand x aspirin

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)