Is the following relation a function

{ (-1,1), (0,3), (-1,5), (2,7) }

Syria has the 5 apps on her phone wich is 3 less than twice the amount the Khary has. How many apps does Khary have?

Which algebraic expression is equivalent to the expression below? 12 (9 + 7x) + 22 A. 84x - 130 B. 84x + 86 C. 7x + 130 D. 84x + 130

Simplify x^3 y ^4 / 3y^4

Joanie tossed a nickel 30 times. She tallied 18 heads and 12 tails. a) What is the experimental probability the next toss will be a tail? b) What is the experimental probability the next toss will be a heads?

Here is a sequence 5, 10, 20, 40, 80 What is the term-to-term rule of the sequence?

Ken finished one-half of his homework problems at school. He finished two thirds of the remaining problems at home. He had 5 problems left. How many problems were there in total? A. 20 B. 25 C. 30 D. 40 E. 60

Akeem has 24 meters of rope. Which of the following lengths is equal to 24 meters? A 0.024 kilometers b 0.24 kilometers c 2.4 kilometers d 240 kilometers

X-intercept of the line whose equation is 8x+2y=4

If 400 reduced by two times my present age is 296, how old am I now?

Describe how to decide 64 is a prime number or composite number