What is the value of the expression 3+2\cdot7^2-4\cdot63+2⋅7 2 −4⋅6 ?

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50