The magnitude of a vector is xi + 15j is k find the positive value of x

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

Solve 2^x=32 and rewrite this equation in a logarithmic form

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much