Write 3 quadrillion in standard form

What is the reflection image of (5,-3) across the line y = -x?

Three times the sum of a number and seven is negative thirty-six. what is the number?

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .