Simplify the expression. Explain each step:
1. 3.5 + (x + 2.7)
2. (8 x k) x 4

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re