Can someone pleassseee help me with this trigonometric function problem? I am stuggling and it would mean a lot.

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

What is the area of a rectangle with vertices (-8,-2), (-3,-2), (-3,-6), and (-8,-6)? units