15 plz ! part a: write an algebraic expression for 4 more than 3 times a number. (5 points)part b: write a verbal expression for 2(n + 9). (5 points) plz plzwhoever gives answer faster gets brainiest

Part A: 3x + 4

Part B: Two times 9 more than a number.

Step-by-step explanation:

For Part A, 4 more means add 4. 3 times a number means 3 times a random number which is X. For part B, you can just follow the same steps.

Part A:  3n+4

Part B: two times the quantity, nine more than a number

Step-by-step explanation:

Part A: Write an algebraic expression for 4 more than 3 times a number.

more than means add

times means multiply

Let n be the number

3 times a number

3n

4 more than

3n+4

Part B: Write a verbal expression for 2(n + 9)

Take inside the parentheses first,

more than means add

nine more than a number

n+9

times means multiply, quantity means it is inside the parentheses

two times the quantity, nine more than a number

2(n+9)

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x