What is one tenth less than 0.7 in decimal form

Is the following relation a function? x y 1 4 −1 −2 3 10 5 16 yes no

Kathy spent 5/8 of her money on books and another 1/6 of her money on stationeries. what fraction of kathy’s money was left?

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)