Graham spent a total of $15.05 on 10 apples and a packet of strawberries. If a packet of strawberries cost $2.55, how much did each apple cost?

$1.25

Step-by-step explanation:

X will be the number of apples and y will represent packets of strawberries

10x+y=15.05

We know that y=2.55 so we can plug that in and get

10x+2.55=15.05

subtract the 2.55 and get

10x=12.5

divide by 10 and get

x=1.25

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm