58% A group of students were given a spelling test.
The table shows their marks.
Mark
Frequency
6
5
4
a) Work out the range of the marks.
7
8
7
b) How many students are in the group?
9
10
10
4
c) Work out the mean mark of the group.
what is the mean

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?