70 = 7x - 7(2x - 5)
How do I solve this ?

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

How do you find the circumfrance of a circle?