A group of students were given a spelling test. The table shows their marks.
Mark
Frequency
6
5
a) Work out the range of the marks.
7
4
8
7
b) How many students are in the group?
9
10
c) Work out the mean mark of the group.
10
4
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Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

What is the difference between the equations of a vertical and a horizontal line?

For [tex]f(x) = 4x + 1[/tex] and (x) = [tex]g(x)= x^{2} -5,[/tex] find [tex](\frac{g}{f}) (x)[/tex]a. [tex]\frac{x^{2} - 5 }{4x +1 },x[/tex] ≠ [tex]-\frac{1}{4}[/tex]b. x[tex]\frac{4 x +1 }{x^{2} - 5}, x[/tex] ≠ ± [tex]\sqrt[]{5}[/tex]c. [tex]\frac{4x +1}{x^{2} -5}[/tex]d.[tex]\frac{x^{2} -5 }{4x + 1}[/tex]