How do I solve this system using substitution: y = x + 4; y = 3x

What is the vertex for y=4 (x-1) (x-7)

Explain why 0.25x0.4 has only one decimal place in the product.

Charlie wants to simulate a random selection from a large population of 40% males and 60% females. How could he use slips of paper for the simulation? A) Cut 5 equal-sized slips of paper, 2 for males and 3 for females.

The world record for the women's 3,000-m steeplechase is 9 min 1.59 s. Find the runner's speed in meters per second. Round answer to the nearest hundredths.

Use absolute value to express the distance between - 10 and 16 on the number line.

Can 4x+9x+5 be simplified

Round off 0.043 to one significant figure

There are fifty people in line for tickets to the Royal Rumble. Each time a fan buys a ticket, you skip two places in line. How many fans will buy tickets before you do?

What is 1/3 plus 1/3

How to know if something is a right triangle with slope formula?