If y = 4x³ - 2x² + x, find \(\frac{\delta y}{\delta x}\)

• A. 8x² - 2x + 1
• B. 8x² - 4x + 1
• C. 12x² - 2x + 1
• D. 12x² - 4x + 1

In how many ways can a team of 3 girls be selected from 7 girls?

• A. \(\frac{7!}{3!}\)
• B. \(\frac{7!}{4!}\)
• C. \(\frac{7!}{3!4!}\)
• D. \(\frac{7!}{2!5!}\)

If y = cos 3x, find δy/δx

• A. 1/3sin3x
• B. −1/3sin3x
• C. 3 sin 3x
• D. -3 sin 3x

\(\begin{array}{c|c}

Values & 0 & 1 & 2 & 3 & 4 \\

\hline

Frequency & 1 & 2 & 2 & 1 & 9

\end{array}\)

Find the mode of the distribution above

• Find the mode of the distribution above A. 1
• B. 2
• C. 3
• D. 4

Solve for x in 8x^-2 = 2/25

• A. 4
• B. 6
• C. 8
• D. 10

Find the minimum value of y = x² - 2x - 3

• A. 4
• B. 1
• C. -1
• D. -4

A woman bought a grinder for N60,000. She sold it at a loss of 15%. How much did she sell it?

• A. N53,000
• B. N52,000
• C. N51,000
• D. N50,000

Evaluate \(\int (2x + 3)^{\frac{1}{2}} \delta x\)

• A. \(\frac{1}{12} (2x + 3)^6 + k\)
• B. \(\frac{1}{3} (2x + 3)^{\frac{1}{2}} + k\)
• C. \(\frac{1}{3} (2x + 3)^{\frac{3}{2}} + k\)
• D. \(\frac{1}{12} (2x + 3)^{\frac{3}{4}} + k\)

A cylindrical tank has a capacity of 6160m3. What is the depth of the tank if the radius of its base is 28cm?

• A. 8.0m
• B. 7.5m
• C. 5.0m
• D. 2.5m

Find the value of x in the figure below

• A. 20√3cm
• B. 10√3cm
• C. 5√3cm
• D. 4√3cm