Lee wants to work out the range of the five temperatures his calculation is 30-20=10 is this method correct give a reasin to support your answer

What is sin 7x/4 ? i need on this urgent trig

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

Agroup of three friends order a combo meal which includes two slices of pizza and a drink each drink is priced at $2.50 the combined total of $31.50 how much is the cost of a slice of pizza