What is the value of x in the following equation? 4(x-1) = 2(x +1)

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park what is the unit rate and what does it represent in the context of the situation?

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle

Ntriangle abc, m∠a = 35° and m∠b = 40°, and a=9. which equation should you solve to find b?