Julie is making homemade greeting cards. The data table below represents the amount she spends in dollars f(x),
in terms of the number of cards she makes, X.
f(x)
0
Х
1
1
3.50
2.
6
3
8.5
4
11
a) Write a linear function, f(x), that represents the data.
b) Explain what the slope and y-intercept of f(x) mean in the
given context.

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?

Me i'm timed right now! a. (0,-5)b. (0,-3)c. (0,3) d. (0,5)