Which description can be written as a linear function

R/ Eighth more than twice a number.

Step-by-step explanation:

We have several expressions and we need to establish which of them will be linear functions.

1- Eighth more than twice a number. it means 8+2x. Linear function.

2- Three more than the product of two numbers: 3 + x*y. Product of two linear variables.

3- Ten more than the square of a number: 10 + x*x. Quadratic function.

4- Nine more than one divided by a number: 9 + 1/x. Inverse function.

As we can see only options 1 and 2 could be linear. However, the product of two linear variables is not linear, is quadratic.

Finally, We can conclude that the only description which can be written as a linear function is: Eighth more than twice a number.

the best buy, is the 4- kilogram bag of lollipops for $18.40.

step-by-step explanation:

i found my answer by dividing the cost of each bag by their respective weights.

14.88 divided by 2 = 7.44

17.29 divided by 3 = 5.77

18.4 divided by 4 = 4.6

24.4 divided by 5 = 4.88

by this, i found that the 4 kilo bag is the best buy.

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3